undersea
undersea — 形容詞
1. positioned, constructed, or taking place in the ocean beneath its surface level
海底的
位於或發生在海面以下的
positioned, constructed, or taking place in the ocean beneath its surface level — used for things like cables, mountains, volcanoes, or research facilities that are under the water and not visible from above.
A powerful undersea earthquake triggered a tsunami that struck the coast of Japan.
一場強烈的海底地震引發了海嘯，襲擊了日本海岸。
undersea + earthquake: natural disaster collocation
The new undersea tunnel links the main island to a smaller nearby island.
這條新的海底隧道將主島與附近一個小島連接起來。
undersea + tunnel: engineering/construction collocation
Biologists discovered an undersea forest of giant kelp off the coast of Chile.
生物學家在智利外海發現了一片巨大的巨藻海底森林。
Imran read a report about undersea mining and its effects on ocean wildlife.
Imran 讀了一份關於海底採礦及其對海洋野生動物影響的報告。
- underwater
more common in everyday speech; broader — includes lakes and rivers, not just seas
- submarine
more technical; often describes geological or military features (submarine volcano, submarine cable)
- subsea
technical term used in oil/gas and engineering industries
文法句型
undersea + noun (cable, volcano, habitat, exploration)
用法筆記
Attributive adjective only — used before a noun (an undersea cable) but not after a linking verb (❌ the cable is undersea). For predicative use, switch to 'underwater' or 'under the sea'.
常見錯誤
undersea — 副詞
1. in or into the water beneath the ocean's surface — used to describe the location
海面下
在海洋表面以下的位置
in or into the water beneath the ocean's surface — used to describe the location of a movement, position, or activity relative to the open sea rather than a lake or river.
The research vessel can operate undersea for weeks without needing to refuel.
這艘研究船可以在海面下連續作業數週而無需加油。
operate undersea: verb-of-operation + adverb
Vinícius studied how sound travels undersea for his oceanography thesis.
Vinícius 為了他的海洋學論文研究了聲音在海面下如何傳播。
A team of engineers tested new sensors undersea near the Great Barrier Reef.
一組工程師在大堡礁附近的海面下測試了新感測器。
The ancient city was discovered undersea by divers exploring the Mediterranean coast.
這座古城是在探索地中海海岸的潛水員於海面下發現的。
- underwater
more frequent in everyday use; works in both fresh and salt water
- submarinely
very rare; only in extremely technical contexts
文法句型
verb + undersea (travel undersea, live undersea, film undersea)
用法筆記
Post-verbal position is typical: the adverb follows the verb ('travel undersea', 'live undersea'). Avoid front-position (❌ Undersea, they built a lab.) — use 'Underwater' or 'Beneath the sea' instead for sentence-initial adverbial phrases.